We may here observe that the piles which are driven into the ground with remarkable accuracy as to straightness, are well sheathed, from the bed of the river to the high water mark, with metal, securely fastened, so as to guard the bottom portions of the piles from the ravages of the worm.

You can see he piles in the ground that are really straight covered in metal wrapped tightly so that the bottom portions of the piles so that the worms can't get to it.